Add failovertest.py --launchdelay
Add failovertest.py --launchdelay

This waits some number of seconds before restarting a killed server.

TigerZhang/logcabin,gaoning777/logcabin,tempbottle/logcabin,dankenigsberg/logcabin,gaoning777/logcabin,TigerZhang/logcabin,TigerZhang/logcabin,gaoning777/logcabin,logcabin/logcabin,gaoning777/logcabin,dankenigsberg/logcabin,chaozh/logcabin,tempbottle/logcabin,tempbottle/logcabin,logcabin/logcabin,logcabin/logcabin,logcabin/logcabin,TigerZhang/logcabin,chaozh/logcabin,dankenigsberg/logcabin,dankenigsberg/logcabin,tempbottle/logcabin,chaozh/logcabin,chaozh/logcabin